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Front Fork question 1969 A65 #734346
05/07/18 1:13 am
05/07/18 1:13 am
Joined: Feb 2010
Posts: 45
Texas
P
Paula C. Buls Offline OP
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Paula C. Buls  Offline OP
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Texas
Hi All,

It's been a while since I've been on here. I'm afraid Penelope (my '69 A65L) has been in storage for a while and for the last year or so I've been working on a total rebuild.

The front forks turned out to be a hodge lodge of mismatched parts and I've slowly been rebuilding them and putting them to right with correct parts. I have a fitment question.

When I assemble the forks I have about an inch of clearance between the tops of the fork sleeves/headlight brackets and the top yoke. In other words about an inch of the fork stanchion is exposed. Is this correct? It doesn't seem right to me. The fork sleeves (headlight brackets) I have are 7 3/4 " top to bottom. Is it possible these are not the correct sleeves?

Hopefully someone has an answer.

Thanks in advance.

Paula


1969 BSA Lightning "Penelope"
1978 BMW R80/7 "Freyja"
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Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734352
05/07/18 3:28 am
05/07/18 3:28 am
Joined: Sep 2014
Posts: 190
Ohio
A
Andrew Dunham Offline
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Andrew Dunham  Offline
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Joined: Sep 2014
Posts: 190
Ohio
Hi Paula,

That does not seem correct. I do not have a measurement for the proper headlamp brackets, but both of my A65's have the headlamp brackets fit between the yokes with no space and the fork gaiter covering the bottom of the headlight ear.

As seen here:

[Linked Image]

I will get a measurement tomorrow morning if no-one else has responded by then.

Last edited by Andrew Dunham; 05/07/18 3:33 am.

1961 BSA Super Rocket
1968 BSA A50
1969 BSA 441 VS
1970 BSA Thunderbolt
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734375
05/07/18 8:54 am
05/07/18 8:54 am
Joined: May 2004
Posts: 3,763
Sydney Australia
B
BSA_WM20 Offline
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Sydney Australia
I think you will find they are plunger fame shrouds.
They had a drop down top clamp so the distance between the upper & lower was a lot less.


Bike Beesa
Trevor
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734392
05/07/18 2:05 pm
05/07/18 2:05 pm
Joined: Feb 2010
Posts: 45
Texas
P
Paula C. Buls Offline OP
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Paula C. Buls  Offline OP
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Texas
Excellent! Thanks guys! I'll look for some proper fork sleeves.

Cheers,

Paula


1969 BSA Lightning "Penelope"
1978 BMW R80/7 "Freyja"
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734440
05/07/18 10:45 pm
05/07/18 10:45 pm
Joined: Feb 2003
Posts: 2,935
Ohio
R
Rickman Offline
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Ohio
Hi Paula,
I have a set of drop-top ears/sleeves around here somewhere, but I can't lay my hands on 'em...

But, I have a set from an A10, and a set from an A-65 Hornet, they are both @ 8-9/16" long.

Re: Front Fork question 1969 A65 [Re: Rickman] #734458
05/08/18 3:22 am
05/08/18 3:22 am
Joined: Feb 2010
Posts: 45
Texas
P
Paula C. Buls Offline OP
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Paula C. Buls  Offline OP
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Texas
I went ahead and purchased a set of NOS off fleaBay. I was told the correct length is 8 3/4 which defs corresponds to the approximate 1 inch of fork tube left exposed with the current set. I wonder if there is anyone out there needing a shorter set for a plunger forked bike.

Cheers,

Paula

Last edited by Paula C. Buls; 05/08/18 3:23 am. Reason: typo

1969 BSA Lightning "Penelope"
1978 BMW R80/7 "Freyja"
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734466
05/08/18 4:22 am
05/08/18 4:22 am
Joined: Sep 2001
Posts: 2,796
Comox BC Canada
G
Gordo in Comox Offline
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Comox BC Canada
Your shorter headlamp mounts (ears) sound like the type used on the early A65 models with the cranked down top yoke. These went to 1965 for some of the A65 machines. The key measurement is from the underside of the top yoke to the center of the mounting bolt in the bottom yoke. If that is wrong the they will not work. The exact amount below the bolt does not matter in that the rubber gaiter can make up any slight differences by stretching or compressing.

Gordo


Without frequent roadside repairs there is no fun in riding!
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734614
05/09/18 12:24 pm
05/09/18 12:24 pm
Joined: Apr 2007
Posts: 807
Brisbane, Australia
BrizzoBrit Online content

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BrizzoBrit  Online Content

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Brisbane, Australia
B25?

I think I got tricked by this once. Not sure if the tab for the yoke bolt is the same length.

Cheers
Ray


BSA 1969 A65F
BSA 1966 A65H
Triumph 1968 T120
Kawasaki A1R
& too many projects!
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734690
05/10/18 1:47 am
05/10/18 1:47 am
Joined: Apr 2018
Posts: 7
Virginia Beach
S
Stasch Offline
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Stasch  Offline
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Virginia Beach
Interesting discussion. I am experiencing a similar issue with my 67 Lightning rebuild. I have a 1/16 inch gap between the lamp holders/mounts and the bottom of the top yoke. Same on both left and right. Reviewing the many pictures I took of the bike before disassembly revealed no gap. Aside from a few new ball bearings, I reused the same parts to reassemble. The steering head went together nicely and rotates smoothly from right to left and left to right. No binding. No sticking. However, when I installed the stanchions and lamp holders I noticed the gap. I can't close it. I tried screwing down on the adjusting sleeve but that only over-tightened the steering head. Didn't close the gap. Is 1/16th of an inch acceptable? Is it a big deal? Will it cause frontend vibration? Is it unsafe? How do I close the gap if it is or will be an issue down the road? Thanks, Stasch.


stanley g stefansky
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734739
05/10/18 1:47 pm
05/10/18 1:47 pm
Joined: Feb 2007
Posts: 612
Ewing. NJ
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edunham Offline
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Ewing. NJ
I have a 1/16" gap on my '66.

Ed from NJ

Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734742
05/10/18 2:44 pm
05/10/18 2:44 pm
Joined: Apr 2018
Posts: 7
Virginia Beach
S
Stasch Offline
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Virginia Beach
Ed, thanks. Have you noticed any bad effects? Any problem with dirt or moisture getting in?


stanley g stefansky
Re: Front Fork question 1969 A65 [Re: edunham] #734749
05/10/18 3:37 pm
05/10/18 3:37 pm
Joined: Feb 2003
Posts: 2,935
Ohio
R
Rickman Offline
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Ohio
..... May I make a possibly thoughtless suggestion?

I have no idea how tight the bolt in the bolthole of the ears/mount is, but, is it possible that one person tries to hold the ear/mount as high as possible, while a second person tightens the bolt and nut to desired torque?

Maybe there is a small amount of movement there???

Yeah, one will need to find another person to make this work...

Maybe, _IF_ an owner has enough time at some point, drift the races out of the frame's gooseneck, make sure every bit of paint, dirt, welding splatter, or other swarf is out of the way of completely setting the races down in their cups of the gooseneck, and after reassembling, the distance might close up?

This way, your steering bearings get a fresh application of grease.....

Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734758
05/10/18 5:34 pm
05/10/18 5:34 pm
Joined: Feb 2008
Posts: 4,384
New Jersey USA
Tridentman Online content

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New Jersey USA
"In the day" the solution to the gap problem was to put a single turn of black insulating tape around the top of the fork ear.
HTH

Re: Front Fork question 1969 A65 [Re: Tridentman] #734781
05/10/18 8:00 pm
05/10/18 8:00 pm
Joined: Feb 2010
Posts: 45
Texas
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Paula C. Buls Offline OP
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Paula C. Buls  Offline OP
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Texas
Originally Posted by Tridentman
"In the day" the solution to the gap problem was to put a single turn of black insulating tape around the top of the fork ear.
HTH

Good one!


1969 BSA Lightning "Penelope"
1978 BMW R80/7 "Freyja"
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #734788
05/10/18 8:46 pm
05/10/18 8:46 pm
Joined: Feb 2007
Posts: 612
Ewing. NJ
E
edunham Offline
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Ewing. NJ
In reply to Stasch, no effects have been noticed.

Ed from NJ

Re: Front Fork question 1969 A65 [Re: Tridentman] #734793
05/10/18 9:11 pm
05/10/18 9:11 pm
Joined: Aug 2001
Posts: 252
Duesseldorf/Germany
Phil in Germany Offline
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Phil in Germany  Offline
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Posts: 252
Duesseldorf/Germany
Originally Posted by Tridentman
"In the day" the solution to the gap problem was to put a single turn of black insulating tape around the top of the fork ear.
HTH

I have faced a gap as well when installing SRM's taper roller bearings in the headstock of my 69 Lightning. Since then I simply roll an O-ring onto the headlight ears prior to pulling the stanchions home. Once things are assembled, I roll the O-ring to the top and the gap is closed resp. not visible.

Cheers!

Phil


Best regards
Phil
Duesseldorf/Germany
'62 A 65 Star (disassembled)
'69 A 65 Lightning
'71 A 65 Firebird
'75 T 160
'84 Yamaha SR 500
Re: Front Fork question 1969 A65 [Re: Paula C. Buls] #735039
05/12/18 8:32 pm
05/12/18 8:32 pm
Joined: Apr 2018
Posts: 7
Virginia Beach
S
Stasch Offline
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Stasch  Offline
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Virginia Beach
All, thanks for the feedback. Phil, I will definitely try the O-ring solution.


stanley g stefansky

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